Lamp construction



C. L. DE MARTIN AND H. C. FOSTER.

LAMP CUNSTHUCHUN.

APPLICATKON mu) APR I. m0.

Patented Jan. 17,

IVA/656V 6, Fosrae a .4 TTORNEYS UNITED STA S PATENT OFFICE.

CHARLES L. DE MARTIN AND HARRY C. FOSTER, OF CONNERSVILLE, INDIANA, ASSIGNORS TO INDIANA LAMP COMPANY, OF CONNERSVILLE, INDIANA, A

CORPORATION.

LAMP CONSTRUCTION.

Specification of Letters Patent.

Patented Jan. 17, 1922.

Application filed April 1, 1919. Serial No. 286,676.

county of Fayette, and State of Indiana,

have invented a certain new and useful Lamp Construction; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like numerals refer to like parts.

This invention relates to a lamp construction whereby the various parts comprising the lamp may be easily and quickly assembled or disassembled without the necessity of using numerous screws or spring and cap locking devices. In this construction one bolt secures all of the various parts of the lamp together so that by simply removing the single bolt or nut the reflector, lamp, lens and lens rim may be readily and quickly removed from the lamp casing. This is accomplished by a very simple construction as will be more fully described in the specifications and claims.

Another feature of this invention is the- .made a partof this application Fig. 1 is a central vertical cross section through the lamp. Fig. 2 is a partial side elevation showing the locking member in and out of locking position. Fig. 3 is a modified form showing a portion of the central vertical cros section through said lam Fig. 4 shows a further modified form 0 a portion of said lamp.

There is shown in the drawings a lamp having a lamp casing 10, reflector 11, lens 12 and door or lens rim 13. The lens 12 fits into the rim 13 and is removably secured therein by the spring ring 14. Pivotally mounted on each side of the rim 13 there is a locking member composed of the arms 15, which extend directly to the rear of the lamp casing. Rigidly mounted on said reflector 11 and extendin rearwardly therefrom there is a socket thim 1e 16 which receives and encloses the lam socket 17, in which the lamp 18 is fixed. he locking member is prowhich bears resiliently against the thimble 16 and forces the reflector directly against the lens 12, when said locking member is in locking position. A bolt 20 is secured to the rear portion of said locking member and extends through the rear of the lamp casing so as to receive a nut 21 mounted in the easing handle'22, which bolt and nut draw the locking member inwardly as they are screwed to ether, thereby drawing the lens rim 13 tig tly against the flange edge of the lamp casing so as to cause said rim to wedge therein and make a tightly sealed o1nt.

In mounting the lamp the lens is set in place and secured by inserting the ring 14 into the recess of the rim 13, the lamp and socket are placed in position in the thimble 16 and the reflector mounted against the lens. The locking member is then drawn down into position as shown in Fig. 2 for engaging the thimble 16 and forcing the reflector tightly against the lens.' The reflector and lens is then placed in the lamp casing with the bolt 20' extending therethrough. The nut 21, in the handle 22 is then screwed on the bolt, which draws the rim 13 snugly into the lamp casing and causes it to wedge therein, whereby the various demountable parts of the lamp are held securely and tightly in their proper position. In the same manner the parts may be removed by removing the nut 21 from the screw 20 and lifting the locking member as shown in dotted lines in Fig. 2.

The modified View shown in Fig. 3, shows substantially the same construction as heretofore described, excepting that an ordinary screw bolt 25 is used, which extends directly through the rear of the lamp casing and screws into the locking member 15.

Fig. 1 shows a modified form wherein the screw 25 is mounted in a handle 22 and screws directly into the locking member 15.

The invention claimed is:

1. In a lamp structure having a lens rim, a lens mounted in said rim, a reflector adapted to abut said lens, a rearwardly extending projection on said reflector, and yielding means pivot-ally secured to said rim and slidably engaging said projection forcing it against said lens for holding it in position thereon, whereby said rim, lens and reflector will be heldrigidly together as a unit.

2. In combination with a lamp structure having a lamp casing, a lens, a lens rim, a reflector adapted to abut said lens, and a lamp mounted in said reflector, of a locking member adapted to force said reflector against said lens, and means for enga ing said locking member and causing it to raw said lens rim tightly against said lamp casing, thereby securing the elements of said lamp structure firmly in position.

3. In combination with a lamp structure having a lamp casing, a lens, a lens rim for securing said ens in position, and a reflector adapted to abut said lens, of a rearwardly extending thimble on said reflector, a lamp, a locking member, a spring on said locking member adapted to engage said thimble for forcing the reflector against said lens, and means for engaging and causing said looking member to draw the lens rim tightly against said lam casing thereby securing the elements of said lamp structure firmly in position.

4. In combination with a lamp structure having a lamp casing, a lens, a lens rim for securing said lens 1n position, and a reflector adapted to abut said lens, a lamp, of a locking member, a spring on said locking member adapted to engage said reflector for forcing it against said lens, and means for causing said locking member to draw said,

lens rim tightly against said lamp. casing, whereby the elements of said lamp structure are held firmly in position.

wardly extending projection on said reflector, a locking member pivoted to said lens rim, means for engaging said rearwardly extending member for forcingthe reflector against said lens, and a bolt adapted to extend through the rear portion of said lamp casing for drawing said locking member inwardly and causing said lens rim to seat tightlIy against said lamp casing.

6. n combination with a lamp structure having a lamp casing, avlens, a lens rim for securing said lens in position, and a reflector adapted to abut said lens, of a rearwardly extending thimble on said reflector, a lamp socket in said thimble, a lamp mounted in said socket, a locking member having two arms pivoted at their ends to the inner surface of'said lens rim, and extending, rearwardly therefrom to the back of the lamp casing, a spring on said locking member adapted to engage said thimble for forcing the reflector against said lens,a bolt secured to said locking member and projectin through said lamp casing, and a nut adipted to screw on said bolt for drawing said rim and casing together.

In witness whereof, we have hereunto affixed our signatures.

CHARLES L. DE MARTIN. HARRY C. FOSTER. 

